{"json_modified": "2016-03-28T08:47:09.687351", "uuid": "f8f4053d-8da1-4f3a-8b03-5ae100ca286e", "title": "SourceBuffer.appendWindowStart", "url": "/en-US/docs/Web/API/SourceBuffer/appendWindowStart", "tags": ["API", "SourceBuffer", "appendWindowStart", "Reference", "Property", "Experimental", "Video", "Audio", "MSE", "Media Source Extensions"], "translations": [], "modified": "2015-10-04T23:50:41", "label": "SourceBuffer.appendWindowStart", "localization_tags": [], "locale": "en-US", "id": 163105, "last_edit": "2015-10-04T23:50:38", "summary": "The <code><strong>appendWindowStart</strong></code> property of the <a href=\"/en-US/docs/Web/API/SourceBuffer\" title=\"The SourceBuffer interface represents a chunk of media to be passed into an HTMLMediaElement and played, via a MediaSource object. This can be made up of one or several media segments.\"><code>SourceBuffer</code></a> interface controls the timestamp for the start of the <a href=\"https://w3c.github.io/media-source/#append-window\">append window</a>, a timestamp range that can be used to filter what media data is appended to the <code>SourceBuffer</code>. Coded media frames with timestamps wthin this range will be appended, whereas those outside the range will be filtered out.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Value", "title": "Value"}, {"id": "Errors", "title": "Errors"}, {"id": "Example", "title": "Example"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/SourceBuffer/appendWindowStart", "review_tags": []}